Internal-combustion engine.



W. J. B'LATT.

INTERNAL COMBUSHON ENGINE. APPLIFIATION FILED QCT.28, 1916.

1,265,596. Patented May 7,1918.

2 SHEETS-SHEET I.

ENTERNAL-GOMEU El.

Application filed fictolier 28, 1916.

To @213 whom it may concern:

Be it known that I, TYVILLIAM Been, a citizen of tee Uniteci States, residing at Holliclaysburg, in the county of Blair and State of Pennsylvania, have invented new and useful improvements in. Internal-Combustion Engines, of which the following is a specification.

This invention relates to internal. comhustion engines, the object in view being to produce an engine or" the twocycle type in which companion cylinders are arranged. at an angle to each other resembling engines of the V type, the said angularly related cylinders having a single or combined combustion chamber in which the charges are explcdecl by a single ignition device, the one paneling charge acting simultaneously on both pistons and the latter being so connected with the crank shaft that one-of the pistons will always operate slightly in atlvance of the other piston thereby producing an economical two cycle engine in which the exhaust port is opened before the inlet port and said exhaust port is also closed before the inlet port is closecl.

11 further object in view is to produce a two o ole hi h soeecl internal. combustion engine the construction of which results in a valveless motor having the economy and flexibility of the ordinary four cycle motor without the complicated valve .iechanisrn thereof.

With the above and other ohjectsin view, the invention consists in the novel construction, combination and arrangement of parts, as herein described, illustrates; and claimed.

In the accompanying drawings Figure 1 is a section through the improved engine taken transversely of the crank shaft and clianietrically of the companion cylinclers.

Fi n 2 is a section taken at right angles to Fig. l, in line with the crank shaft and diametrically of adjacent cylinders.

Fig. 3 is a. fragmentary, horizontal section in line with the outlet port.

Referring to the drawings fl designates the crank shaft which is journalcd in bearings 2 fitted in the crank case 3, the lower section 4 of which is cle'tachably fastened to the upper or main section by means of bolts 5 inserted through lugs or flanges 6 on the crank case sections. In Fig. 2, two of such crank cases 3 are shown but are separated from each other in order to admit Serial 128,2?1.

of the necessary crank case compression. While I have shown units in Fig. 2, it will he understood tha so engine may be constructed with one unit or as niany units as may he desired.

Each unit connirises two companion cyl incler i and 8 harm f a common Water jacket 9 and a comn'lon c "iarnher 10, 11 and 12. The cylinder i with a lay-pass 12 having an inl t it LO receive the charge compress crani: case; and an outlet port 15 port for the cylinder 10. lhe provided with an outlet port which constitutes the exhaust port of the pair of cornpanion cylinders in the intervening portion 17 between the cylinders 7 and 8 there is in large inlet chamber to which the gas is conducted by an intake pipe 19 having attached thereto a suitable carburoter 20. An inlet port 21 lcarls from the chamber 18 into the cylinder 7 and is ui'icovered by the piston in that cylinder as the latter approaches the outer limit of its movement.

Within the cylinder 7 is a reciprocatory piston 22, another reciprocatory piston working in the cylinder 8. A rocl 2-1- connects the piston 22 with the crank arm 25 of the shaft 1 and another connecting rod 26 connects the piston 23 with saicl crank arni. Both of the connecting rods and .26 are connected to the same crank arm 25 as indicated in Figs. 1 and designates an ignition member shown in too form of an ordinary spark plug. The water jacket is provided with inlet and outlet connections 28 and 29 respectively. 30 designates a fly wheel fast on the crank shaft 1.

in the operation of the engine. as the piston approaches tlu outer limit of its movement it uncovers the por 21. and on account 01 [he suction or partial vacuum crcatccl. in the crank case and lower portions 01. the cylinders. a charge of explosive 1uixlure is admitted to the crnnK case. in the return or inward increment of the pistons said charge of mixture lSCOllilllQSFEd in the crank case and forced through the port 1. into the ivy-puss i3. is the piston 22 approaches the inner limit of its movement, it uncovers the port 15 and the compressed charge is then libcratei'l into the combustion chamber- 10. ll and 12. At such time the exhaust port 16 is closed by the piston in the outward increment of the pistons. the charge is compressed in the combustion chamber and fired driving the pistons inward on their Working strokes. Before the port 15 is uncovered, the exhaust port 16 is uncovered by the piston thereb' permitting the burned gases to be exhauste Just after this occurs, the piston 23 starts on its out ward movement and covers the exhaust port 16 just as the piston 22 uncovers the intake port 15. Then the piston 2 starts to return and closes the intake port 15. The charge of mixture then trapped in the combustion chamber is compressed as before. This operation is repeated in each cycle of the engine.

It will thus be seen that the en ine is of the valveless two cycle type but differs from the ordinary two cycle engine in that it employs companion cylinders so arranged in relation to each other and having intake and exhaust ports so arranged in relation to the cylinders and the movements of the pistons that there is no waste of gas even at low speeds, the engine is capable of high speed WOlk and possesses the economy and flexibility of the more complicated four cycle internal combustion engine.

claim An internal combustion engine embodying companion cylinders arranged in angular relation to each other, a cylinder head common to both cylinders, a crank case common to both of said cylinders, a combustion chamber common to both of one of said cylinders being by pass leading from the crank case to said combustion chamber, a spark lug located centrally of said common cyliner head, the other cylinder being formed With an exhaust port, pistons Working in said cylinders, a common crank shaft, and connecting rods between said pistons and the Lime crank arm of said shaft, the arrangement of the intake and exhaust ports being such that one piston travels in advance of the other piston, causing the exhaust port to be opened before the inlet port and also to be closed while the inlet port is opened, and a charge receiving chamber located between the cylinders and formed by the Walls thereof, the wall of said charge receiving chamber being formed with a port leading to the crank case and covered and uncovered by one of said pistons, the last ramed port being so located that in one position of the piston in the charging cylinder, said port is closed While the discharge end of the by pass is open.

In testimony whereof I aflix my s gnature.

I WILLIAM J. Bi [ATT- formed With a said cylinders, 

